AVOID COSMETIC REPAIR OF REFRACTORY LINING IN CRITICAL EQUIPMENTS

摘要

Repair or replacement of refractory lining is a continuous process. Dismantling and replacing large amounts of refractory during a turnaround is a challenging and time consuming task. There is a general tendency to squeeze the lining repair schedule to reduce the production losses. This often results in compromise on repair procedures and overlooking basic technical issues. Also, in many cases cosmetic patch repair is carried out instead of a proper repair. The non-performances of repaired refractory and recurring problems are common in the industry. The effects of patch falling out and causing additional operational problems and downtime should always be weighed against carrying the repair job properly. This paper, in general, discusses the importance of proper lining repair and highlights the experiences of detrimental effect of patch repair in a Process Gas Boiler in a petrochemical plant.